baber/WOPTO huggingface dataset:
Patent CA-2014627-A1 (CA)
Title: Preparation of copolymers of carbon monoxide
Inventor: VAN LEEUWEN PETRUS W N M
IPC: C08G67/02
Filed: 1990-04-17
Abstract: A B S T R A C T       PREPARATION OF COPOLYMERS OF CARBON MONOXIDE      Copolymers of carbon monoxide with one or more mono-olefins having at least three carbon atoms in the molecule are prepared by copolymerization of the monomers in the presence of a catalyst composition based upon a)   a palladium compound, b)   an anion of an acid having a pKa < 2, and c)   a bisphosphine of formula (R2)2P-R-P(R2)2, where R      is a bivalent bridging group having at least two C-atoms in the bridge, and R2 is an optionally polar-substituted aliphatic hydrocarbyl group, and in the additional presence of a compound of formula C(X)(Y)(OR3)2 wherein X = H or hydrocarbyl, Y = H, hydrocarbyl or OR3, and R3 = hydrocarbyl.
Patent CA-2014733-A1 (CA)
Inventor: BABOUDJIAN VIKEN P
IPC: C22B7/00
Filed: 1990-04-17
Abstract: A two-stage process for treating anode slimes and other residues containing a substantial amount of nickel without significant dissolution of silver and/or selenium in a single autoclave is disclosed. The process comprises, in a first stage, leaching the anode slimes at 15-30% solids in dilute sulphuric acid at a pressure between 4.0 and 5.5 bars and a temperature between 155°C to 170°C in the absence of oxygen to syllables nickel, and in a second stage, without performing a solid liquid separation, leaching the remaining solids at a pressure between 2 and 3.5, preferably about 2.8 bars and a temperature between 110 and 140°C, preferably about 120°C with oxygen sparging such that the final sulphuric acid concentration is not less than 50 gpl to solubilize copper and tellurium.
Patent CA-2015054-A1 (CA)
Inventor: MEYNIER PATRICK
IPC: G01V1/147
Filed: 1990-04-20
Abstract: : Dispositif anti-rebond pour une masse venant heurter un élément-cible, qui évite tout impact secondaire. Il comporte une contre-masse, des moyens de liaison pour la maintenir écartée de la masse tels qu'un volume de fluide dans une chambre ménagée entre la masse et la contre-masse et des moyens de freinage pour retarder celle-ci de façon à la mettre en opposition de phase avec la masse au moment où elle rebondit après l'impact et à annihiler la force de rebond. Les moyens de liaison et de freinage peuvent encore être constitués d'une couche en matériau amortisseur ou d'éléments déformables ou flexibles agissant par frottement. Application à la réalisation d'une source sismique à impact par exemple.
Patent CA-2015434-A1 (CA)
Title: Process for the purification of alkylene oxide adducts
Inventor: WIMMER IGNAZ
IPC: C08G65/30
Filed: 1990-04-25
Abstract: Abstract Process for the purification of alkylene oxide adducts A novel process for the purification of an alkylene oxide adduct which has bean prepared using halogen-containing metal catalysts and contains halogen-containing compounds and also metals as impurities comprises treating the alkylene oxide adduct which is to be purified with an excess of alkali metal compound and adjusting the pH of the alkaline mixture obtained to a value of at most 7 using an acid, with the proviso that the water content of the product mixture which is then present is at least 0.1 % by weight, relative to the weight of the product. This product mixture  is  freed from water and other solvents, this resulting in the precipitation in coarse crystalline form of salts which are insoluble in the alkylene oxide adduct and which can be easily separated off to isolate the desired pure alkylene oxide adduct.
Patent CA-2015654-A1 (CA)
Inventor: YANG CHIN-HUI
IPC: H02G3/06
Filed: 1990-04-27
Abstract: THREADLESS QUICK CONNECTOR FOR JUNCTION BOX            ABSTRACT:         A junction box assembly, which includes a junction box having a plurality of round holes thereon each said round holes  comprising  two  opposite notches; and  at  least  one connector  for insertion in either one of the round holes  to secure  a  conduit  each to the  junction  box  for  electric wiring.    The connector comprises two  opposite  projections corresponding to the two opposite notches of the round  holes of  the junction box  and a rubber ring mounted thereon  and set  between the projections and a collar thereof  such  that the connector can be conveniently  fastened in either of  the round holes of the junction box.   Two bolt holes are made on the  connector  for the insertion therein of  two  screws  to conveniently secure a conduit therein.
Patent CA-2017087-A1 (CA)
Title: Ball-type check valve
Inventor: LIRETTE BRENT J
IPC: F16K15/04
Filed: 1990-05-17
Abstract: IMPROVED BALL-TYPE, CHECK VALVE ASSEMBLY          ABSTRACT     This invention involves an improved ball-type check valve for use in conditions such as oil and gas drilling which involve abrasive fluids, high pressures, and high temperatures.  In this improved check valve, a one-piece ball retainer is provided which consists of (1) a retainer ring for the ball, (2) a base, and (3) at least two vertical supports which connect the retainer ring and the base.  Peripheral channels are formed by (a) orifices which pass between the vertical supports, adjoined to (b) recessed areas in the base.  This allows the interior passageway (through the retainer ring) to be relatively large in relation to the peripheral channels. This has two effects.  When downward flow begins, fluid velocity through the interior passageway is relatively high, which helps ensure rapid settling of the ball on the retainer ring.  As downward flow continues through the peripheral channels, the small size of the peripheral channels causes continued high velocity, resulting in a relatively low pressure area below the ball compared to the pressure above the ball.  This ensures that the ball remains securely settled on the reatainer ring.  The entire valve can be assembled in a free-standing housing, or in a standard collar or shoe used in drilling or workover operations. This improved valve is easier and less expensive to manufacture than valves having flexible skirts, and it can be used with any size casing or tubing.
Patent CA-2018203-A1 (CA)
Inventor: MELASNIEMI HANNES
IPC: C12N15/74
Filed: 1990-06-04
Abstract: ABSTRACT OF THE DISCLOSURE:          A gene from Clostridium thermohydrosulfuricum DSM 3783 encoding a thermos-table .alpha.-amylase-pullulanase enzyme was cloned in Escherichia coli as a 7 kb insert using a lambda-vector. For subcloning pUC18 and pUC19 plasmids were used. Using a C. thermohydrosulfuricum promoter at least ten different size of soluble intracellular thermostable, mostly degenerated polypeptides having both .alpha.-amylase and pullulanase activities and Mr in the range 165 000 to 100 000 were produced. The temperature optimum of the enzyme composed of these degenarated polypepetides was (80-85 °C), some 5 °C lower than the temperature optimum of the extracellular enzyme from the native host, but the heat stability was the same as that of the native enzyme. The enzyme preparation can be used alone or in combination with a glucogenic or a maltogenic enzyme for effective hydrolyses of starch.
Patent CA-2019415-A1 (CA)
Inventor: SURRENDI DENNIS C
IPC: E04H15/32
Filed: 1990-06-20
Abstract: The invention provides an improved collapsible tent and tent frame of the umbrella type.  The frame includes a plurality of legs pivoted, at the upper ends of the legs, to an upper clevis member.  Each leg has pivoted thereto a radial stay member spaced downwardly from the upper end of the leg.  The stay member extends inwardly of the tent to be pivoted to a lower clevis.  The upper clevis includes a central downwardly opening recess and the  lower  clevis  has  fixed  thereto  an  upperwardly projecting post or rod which is adapted to engage the upper clevis so as to stop movement of the lower clevis. Each leg comprises an elongated lower section which can be relatively stiff.  The upper end of the lower section is pivoted to an upper section which is relatively flexible and resilient so that the upper portion of the legs can conform to the dome of the sheet material forming the tent cover or ceiling.
Patent CA-2024370-A1 (CA)
Inventor: MITCHELL ALLEN L
IPC: B41F31/00
Filed: 1990-08-30
Abstract: A control system for operating at least one set of nozzles on a spray bar and at least one set of plungers on an ink injection device for a printing press.  The control system has a memory for storing at least damp rate curve data and ink rate curve data which is utilized to  control  operation  of  the nozzles  and  plungers, respectively.  A processor is connected to the memory and provides a damp rate control signal as a function of the damp rate curve data and an ink rate control signal as a function of the ink rate curve data.  A first interface for connecting the set of nozzles to the processor is responsive to the damp rate control signal to control operation of the nozzles and a second interface for connecting the set of plungers to  the processor is responsive to the ink rate control signal to control operation of the plungers.  A communication bus system is connected to at least the memory and is operable in response to a received rate curve message to alter the damp rate curve data and the ink rate curve data stored in the memory.
Patent CA-2026419-A1 (CA)
Title: Cephalosporin compounds
Inventor: NAGAKURA ISAO
IPC: A61P31/04
Filed: 1990-09-27
Abstract: ABSTRACT          Certain cephalosporin compounds, and their pharmaceu-tically-acceptable salts or in vivo hydrolyzable esters are useful as antibacterial agents.       "wherein   R1 is lower alkyl substituted by a carboxyl, cyano, halo, hydroxyl or protected carboxyl group; and (A) X is hydroyen or halo and Y is halo, or (B) X is hydrogen and Y is nitro."
Patent CA-2026564-A1 (CA)
Title: Roll-away-tire carrier
Inventor: SCHULTZIK JOSEPH J
IPC: B62D43/04
Filed: 1990-10-01
Abstract: ABSTRACT         To the best of my knowledge this a very simple operating easy to assemble on the vehicle to remove and replace the tire. This device is a longitudinally extending guide structure which is beneath the rear of the pickup truck, with the forward end of the guide having two pins which permit the guide that holds the carriage which in turn carries the spare tire. The rear of the assembly when in position is attached by two large screws which is attached to the rear bumper. When these screws are removed and the assembly lowered to the ground this permits the carriage to be rolled out on the horizontal guide, this carriage when removed has the spare tire that is fully accessible without any problem and very little effort. When the carriage is rolled out, the front end of the carriage is completly clear of the rear bumper of the pickup truck. When the assembly is put back its place under the rear of he pickup truck it is entirely clear of the rear bumper leaving the bumper clear to hook up a trailer travel or utility for use. To the best of my knowledge and information that I have obtained there are no other similar designs in Canada. The operation of lowering the spare tire assembly makes this entirely different from any other design that I have seen. It is not only entirely different but also much more easily operated, again making it different. Also the entire design has very few moving parts, which again is entirely different. The method which the assembly is attached to the rear bumper is again entirely different to any other design, again making it have an out-standing feature which no other design has, in my opinion there is not other design like it.
Patent CA-2028173-A1 (CA)
Inventor: DEBOER CHARLES D
IPC: G02F1/1335
Filed: 1990-10-22
Abstract: METHOD OF MAKING COLOR FILTER ARRAY     FOR LIQUID CRYSTAL DISPLAY            Abstract of the Disclosure A process of preparing a color filter array element for use in making a color liquid crystal display device comprising:      a)   overlaying a dye-receiving element with a dye-donor element, the dye-receiving element comprising a dimensionally-stable temporary support having thereon, in order, a polymeric alignment layer, a transparent conducting layer and a dye-receiving layer; b)   imagewise heating the dye-donor element to transfer a dye image in a repeating mosaic pattern to the dye-receiving layer; c)   removing the dye-donor element from contact with the dye-receiving element; d)   laminating a transparent permanent support to the dye-receiving layer containing the dye image in a repeating mosaic pattern; and e)   removing the temporary support to expose one surface of the polymeric alignment layer, thereby forming the color filter array element.
Patent CA-2028370-A1 (CA)
Title: Electrostatically depositing and electrostatically neutralizing
Inventor: LAMIRAND JOSEPH B
IPC: B05D1/06
Filed: 1990-10-23
Abstract: Dwight B. Raddatz et al. Docket D-1435 Abstract of the Disclosure ELECTROSTATICALLY DEPOSITING AND ELECTROSTATICALLY NEUTRALIZING Apparatus (74) and method are provided for electrostatically depositing particles (64) of a first material onto a sheet (18) of a second material, and for electrostatically neutralizing the residual charge. The apparatus (74) includes a particle generator (20) for aspirating particles (64) of the first material, electrodes (60a and 60b) for electrostatically charging the particles (64) to a first polarity, an electrode (76) for electrostatically recharging a portion of the particles (64) to the opposite polarity, and a depositing chamber (22) for electrostatically depositing the particles of the opposite polarity subsequent to depositing the particles of the first polarity.
Patent CA-2030026-A1 (CA)
Title: Changeable information scroll sign
Inventor: TRAME CHARLES E
IPC: G09F11/18
Filed: 1990-11-15
Abstract: Abstract of the Disclosure A sign composed of modules mounted adjacent each other.  Each module having laterally spaced apart side wall members and a pair of longitudinally spaced apart parallel rollers mounted between the side wall members for rotating.  Opposite end portions of a web containing a  series  of  indicia  are wound on the rollers, respectively, such that a selected indicia can be positioned in viewing position by winding web on one roller while unwinding it on the other roller. There are motor means mounted inside of each of the rollers for rotating the rollers to translate the web. In the depicted embodiment, an electric motor means is mounted inside of one of the rollers and a constant force spring motor means is mounted on the inside of the other of the rollers.   The motors oppose each other in such a way that the web is maintained taut between them.
Patent CA-2032080-A1 (CA)
Inventor: BAUMHAUER JOHN C JR
IPC: H04R1/02
Filed: 1990-12-12
Abstract: A directional microphone assembly is constructed from a first-order-gradient microphone element enclosed  within a housing, molded from an acoustically-opaque, resilient material such as Ethylene-Propylene-Diene-Monomer. The microphone element includes a diaphragm which moves under the influence of sound pressures applied on its opposite surface to generate an electrical signalwhich is proportional to the differential sound pressure. The housing includes a first acoustically-transparant channel for communicating sound pressure from a first opening in the housing to one surface of the diaphragm, and a second acoustically-transparent channel for communicating sound pressure from a second opening in the housing to the other surface of the diaphragm. The housing supports the microphone element and forms a continuous seal around its perimeter so that sound pressure in one channel does not leak into the other. The distance between the openings is relatively large in order to improve the sensitivity and directivity of the microphone. Moreover, the directional microphone assembly is configured to be embedded within, or behind, an exterior surface of sound-input equipment with the openings of the housing located along the exterior surface. The resilient housing structure forms a seal with the sound-input equipment surface.
Patent CA-2035293-A1 (CA)
Title: Arrangement for converting binary input signal into corresponding in-phase and quadrature phase signals
Inventor: ICHIHARA MASAKI
IPC: H04L27/12
Filed: 1991-01-30
Abstract: In order to effectively reduce a memory size of each of two memories provided in an arrangement for converting a binary input data into the corresponding in-phase and quadrature signals, a memory output controller and a sequential logic are provided.  The memory output controller includes two polarity control circuits and two input data selectors.  The two polarity control circuits are respectively coupled to the two memories, while the two input data selectors are preceded by and coupled to both of the two polarity control circuits.  Each of the two polarity control circuits reverses the polarity of the output of the associated memory according to the output of the sequential logic.  On the other hand, each of the two input data selectors is arranged to selectively acquire the outputs of the two polarity control circuits depending on the output of the sequential logic.
Patent CA-2044253-A1 (CA)
Inventor: KIEFER ERICH
IPC: B29C48/475
Filed: 1990-10-27
Abstract: The invention relates to a process for the production of hollow bodies from thermoplastic material by means of extrusion blow molding in which discontinuously produced preforms are expanded in a blow molding mold.        In that process, at least during a part of the filling phase which is typical of such a process, for an extrusion head, the distance covered by an  ejection piston associated with a storage chamber and the speed at which the ejection piston is displaced within the storage chamber by the plasticised material are detected and compared by a central  control  and  regulating device  to  the  respective  reference values.  On the basis of the result of the comparison operation at least one operating parameter of the process, for example the delivery output of the extruder or the extent of the emptying stroke movement of the ejection piston can then be adapted while still in the same working cycle in such a way that substantially the required preform volume is ejected.
Patent CA-2044635-A1 (CA)
Title: Device for moving a cup holder within an analyzer
Inventor: HIRSCH ALEXANDER
IPC: G01N35/04
Filed: 1991-06-14
Abstract: ABSTRACT           A device is disclosed for translatorily moving a plate-shaped cup holder, equipped with cups arranged successively in the direction of movement for receiving liquid, to the processing station of an analyzer.  The cups are used for mixing viscous body fluid, e.g. blood, with a diluent.         Movement of the cup holder and exact positioning of the cups in the processing station are effected in that the cup holder frictionally rests on a driven endless belt, in that an incrementally driven indexing wheel is brought into engagement with the cups, and in that a sensor means is arranged for detecting the passage of each cup and determining the indexing position of the indexing wheel in which a cup is located in its processing position.
Patent CA-2045440-A1 (CA)
Inventor: ABE TSUYOSHI
IPC: C22C38/46
Filed: 1991-06-25
Abstract: Disclosed is a high strength spring steel consisting of, in weight percentage, 0.40 to 0.70% C, 0.50 to 2.00% Si, more than 0.50 to 1.50% Mn, 0.50 to 2.50% Ni, 0.20 to 1.50% Cr, more than 0.60 to 1.50% Mo, 0.01 to 0.50% V, 0.01 to 0.50% Nb, 0.005 to 0.100% Al and the balance being Fe and unavoidable impurities.  The steel of the present invention has a high hardness coupled with high toughness and is very useful especially for springs used in suspension devices or other various industrial machines.
Patent CA-2050476-A1 (CA)
Title: Device for conveying fluid materials
Inventor: MINKKINEN RISTO
IPC: B65G53/52
Filed: 1990-02-22
Abstract: Device (1) for conveying fluid materials, said device consisting of a frame (2) supporting a telescopic boom structure (3) and a hose (4) fitted inside the telescopic boom structure (3), said materials being passed through said hose. The invention is characterized in that the outermost member (3a) of the telescopic boom structure (3) consists of a rigid tube slidably fitted inside the preceding member (3b) of said structure, the end (4a) of the hose (4) inside this member being connected to the feed end (3a') of said rigid tube (3a).
Patent CA-2051294-A1 (CA)
IPC: B63H25/16
Filed: 1991-09-13
Abstract: A manifold is disclosed for converting a manual hydraulic steering signal into a proportional electrical signal.  The manifold is connectable between a hydraulic fluid supply, such a helm pump, and a hydraulic steering cylinder and  includes  a rotary actuator responsive to variations in the flow of hydraulic fluid from the fluid supply.  The manifold is useful for converting small marine vessels from manual to power steering and for providing emergency manual steering in large tankers and the like.
Patent CA-2051825-A1 (CA)
Title: A method of bit rate adaption using the ecma 102 protocol
Inventor: SPENIK JOHN W
IPC: H04J3/06
Filed: 1991-09-19
Abstract: ABSTRACT     There is disclosed a method of adapting user data to rate adapted data  using the ECMA-102 standard.  The user data is received from a user terminal at a user data rate, the rate adapted data is transmitted at a adapted data rate, and the adapted data rate is greater than the user data rate.  The user data is either in a asynchronous or a synchronous format and contains a start element and at least one stop element.  The method involves the steps of:  (1) converting the user data into an intermediate data; (2) storing the intermediate data in a receive buffer; (3) if the user data is in an asynchronous data format, adding stop elements to the intermediate data; (4) transferring the intermediate data in the receive buffer to a intermediate buffer; (5) constructing a frame using data from the intermediate buffer; (6) storing the frame in a transmit buffer, and; (7) transmitting the frame where the step of transmitting changes the frame into the rate adapted data.
Patent CA-2051996-A1 (CA)
Inventor: BOK HENDRIK F
IPC: B05B1/30
Filed: 1991-09-20
Abstract: APPARATUS AND METHODS FOR APPLICATION OF COATINGS WITH SUPERCRITICAL FLUIDS AS DILUENTS BY SPRAYING FROM AN ORIFICE            Abstract of the Disclosure This invention is directed to improved spraying apparatus for coating substrates with a coating material and supercritical fluid which apparatus is provided with various features, either alone or in combination, to prevent undesirable premature cooling of the coating mixture which might detrimentally affect the final coating on the substrate; to prevent undesirable depressurization of supercritical fluid contained in the coating mixture which remains in the spray gun after spraying has been stopped; and/or to desirably provide the ability to mix the components of the coating mixture directly in the spray gun.  Methods for utilizing these features in the spraying apparatus of the present invention are also disclosed.             D-16,455
Patent CA-2054433-A1 (CA)
Inventor: NAKAMURA TAKASHI
IPC: C10M171/00
Filed: 1991-10-29
Abstract: ELECTROVISCOUS FLUID                    ABSTRACT   The present invention relates to an electroviscous fluid which comprises a dispersion of 0.1 to SO weight% of wet- method silica particles whose surface adsorbed water has been replaced by an organic compound having in its molecule at least one group selected from the group consisting of a nitrile group, hydroxyl group, and acid group, in an electrically insulating fluid. The wet-method silica particles haave an average particle diameter of 10 to 500 micrometers and a pH that does not exceed 6.5. This electroviscous fluid provides a substantial increase in yield value at low voltages and an excellent shear stability.